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Very slow Disk IO on RHEL4

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http://www.linuxquestions.org – Hi, I have an HP proliant server where i have internal hard disks and also HP MSA external storage. The IO rate is very very slow on internal hard disks and also on MSA storage. Please se bellow output. Code: [root@dwdb01 ~]# hdparm -Tt /dev/cciss/c0d0p1 /dev/cciss/c0d0p1:  Timing cached reads:  2240 MB in  2.00 seconds = 1119.05 MB/sec HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device  Timing buffered disk reads:  58 MB in  3.10 seconds =  18.72 MB/sec HDIO_DRIVE (HowTos)

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Submitted by xskl on 07/14/2010 – Made popular on 07/14/2010

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